Darren here from Whitespark. There is no "truth" in ranking data. You can set up 5 different tools and then also check your results manually and you can see 6 different results.
This is because rankings are in constant fluctuation and because the results that Google returns vary by so many nuanced details:
- Time of day that the search was run
- Browser
- Device
- Location setting
- IP address
- History of searches from that IP
So, you can definitely expect to see different results between Whitespark and Local Falcon on just one of those data points alone: location setting.
In Whitespark, you probably have the location set to the city centroid or a specific zip code. In Local Falcon, the location will be set to the precise location...